To bend something.
To move part of the body using one's muscles.
To repeatedly bend one of one's joints.
To flaunt one's superiority.
To tighten the muscles for display of size or strength.
The act of flaunting something; something one considers impressive.
Any flexible insulated electrical wiring.
Flexible ductwork, typically flexible plastic over a metal wire coil to shape a tube.
An act of flexing.
A point of inflection.
Flexibility, pliancy.
To make or become mentally tougher.